CN102853277A - LED (Light-emitting diode) light source device - Google Patents
LED (Light-emitting diode) light source device Download PDFInfo
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- CN102853277A CN102853277A CN2011101743101A CN201110174310A CN102853277A CN 102853277 A CN102853277 A CN 102853277A CN 2011101743101 A CN2011101743101 A CN 2011101743101A CN 201110174310 A CN201110174310 A CN 201110174310A CN 102853277 A CN102853277 A CN 102853277A
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- flourescent sheet
- source device
- light source
- substrate
- led light
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Abstract
The invention discloses an LED (light emitting diode) light source device comprising a light emitting part, a fluorescence piece, a driving part and a PWM (Pulse-Width Modulation) adjusting device, wherein the light emitting part comprises a substrate and a plurality of LEDs arranged on the substrate, the fluorescence piece shields a light emission path of the LEDs and comprises a plurality of regions with different content of fluorescent powder, the driving part drives the fluorescence piece and the substrate to oppositely rotate, and the PWM adjusting device adjusts and changes the illumination time of the LEDs to control the irradiated excitation time of the fluorescent powder in each region so as to change color temperatures.
Description
Technical field
The present invention relates to a kind of lighting device, especially a kind of LED light source device.
Background technology
Light emitting diode is a kind of energy-saving and environmental protection, long-life solid light source, and therefore always very active to the research of led technology in recent ten years, light emitting diode also has the trend of conventional light source such as gradually replacing fluorescent lamp, incandescent lamp.In the prior art, LED light source device generally is that light-emitting diode chip for backlight unit is arranged on the circuit board, then utilize the packing colloid of doping fluorescent powder to encapsulate this light emitting diode, the optical excitation fluorescent material that described light-emitting diode chip for backlight unit sends injects to the light source outside.But, because the light-emitting diode chip for backlight unit after the encapsulation and the relative position of phosphor powder layer are changeless, so the colour temperature of the light that LED source sends also is changeless, can't adjust, can not satisfy actual needs.
Summary of the invention
In view of this, be necessary to provide a kind of LED light source device that changes colour temperature.
A kind of LED light source device, it comprises illuminating part and flourescent sheet.This illuminating part comprises substrate and is arranged on some light emitting diodes on this substrate that this flourescent sheet blocks on the bright dipping light path of this light emitting diode.Comprise the different a plurality of zones of fluorescent material content in the described flourescent sheet.Described LED light source device also comprises a drive division and a PWM adjusting device.This drive division drives that flourescent sheet is relative with substrate to be rotated, and this PWM adjusting device is regulated and changed lighting the time of each light emitting diode, controlling the illuminated time that excites of fluorescent material in each zone, thus the change colour temperature.
Above-mentioned LED light source device utilizes drive division to drive that flourescent sheet is relative with substrate to be rotated, utilize the PWM adjusting device to regulate and change lighting the time of light emitting diode, thereby the illuminated time that excites of fluorescent material in the control flourescent sheet in each zone, thereby change colour temperature.
Description of drawings
Fig. 1 is the structural representation of the LED light source device of first embodiment of the invention.
Fig. 2 is the profile of the flourescent sheet of LED light source device among Fig. 1.
Fig. 3 is the structural representation of the LED light source device of second embodiment of the invention.
Fig. 4 is the structural representation of the LED light source device of third embodiment of the invention.
The main element symbol description
| LED |
10、20、30 |
| Illuminating |
100 |
| |
200 |
| |
300 |
| The PWM adjusting |
400 |
| |
110 |
| |
120 |
| |
210 |
| |
220 |
| |
310 |
The following specific embodiment further specifies the present invention in connection with above-mentioned accompanying drawing.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Embodiment one
See also Fig. 1, a kind of LED light source device 10 that first embodiment of the invention provides comprises that an illuminating part 100, a drive division 200 and are arranged on this drive division 200 and block flourescent sheet 300 on this illuminating part 100 bright dipping light paths.
Described illuminating part 100 is arranged on a side of drive division 200.This illuminating part 100 comprises substrate 110 and is arranged on some light emitting diodes 120 on this substrate 110.These some light emitting diodes 120 can be ultraviolet light, blue light, green glow, ruddiness or white light emitting diode.
Described drive division 200 comprises a driver 210 and a rotating shaft 220.One end of this rotating shaft 220 is arranged on the driver 210, but these driver 210 drive shafts 220 are around the rotation of its central shaft and can control rotating shaft 220 and do at the uniform velocity rotation or speed-changing rotation periodically.
See also Fig. 2, described flourescent sheet 300 is a round sheet structure, and its center is sheathed to be fixed in the rotating shaft 220 of drive division 200, blocks on the bright dipping light path of these some light emitting diodes 120, and flourescent sheet 300 can rotate with rotating shaft 220.Be divided into a plurality of zones in this flourescent sheet 300, the content of the fluorescent material in each zone is different.In the present embodiment, described a plurality of zone is a continuum, include a phosphor powder layer 310 in this flourescent sheet 300, the thickness of this phosphor powder layer 310 is non-uniform Distribution in flourescent sheet 300, and its thickness is for to successively decrease gradually from the relative opposite side of a side direction of flourescent sheet 300.By the rotation of flourescent sheet 300, can make different-thickness part difference respective leds 120 in different time of the phosphor powder layer 310 in the flourescent sheet 300.Described phosphor powder layer 310 optional autovulcanization matter fluorescent powders, silicate fluorescent powder, Nitride phosphor, nitric oxide fluorescent powder, yttrium aluminium garnet fluorescent powder, (Sr, Ca) AlSiN
3, the mixing of SiAlON fluorescent material or above-mentioned fluorescent material.In addition, also can contain the light diffusion particle in this flourescent sheet 300, for increasing the light emission rate of LED light source device 10.
Be understandable that described flourescent sheet 300 is not limited to the circle in the present embodiment, can also be other shapes such as triangle, quadrangle, polygon.The thickness of described flourescent sheet 300 interior phosphor powder layers 310 is not limited to the distribution situation in the present embodiment, also can be that direction of rotation along with flourescent sheet 300 is one and periodically distributes, for example the thickness of phosphor powder layer 310 can be along with the direction of rotation of flourescent sheet 300 wavy distribution.
In addition, bright dipping one side of described flourescent sheet 300 also can be provided with some lenticule (not shown), and this lenticule is used for scattering or focused ray.
In use, driver 210 drive shafts 220 are done periodically speed-changing rotation, thereby drive flourescent sheet 300 relative luminous diodes 120 and do periodically speed change rotation, because the thickness of the phosphor powder layer 310 in the flourescent sheet 300 is non-uniform Distribution, therefore flourescent sheet 300 is in doing the process that periodically speed change is rotated, interior light emitting diode 120 forward light of unit interval shine the fluorescent material quantity that excites and change, thereby realize the adjusting to colour temperature.
Embodiment two
See also Fig. 3, the difference of the LED light source device 20 that second embodiment of the invention provides and the LED light source device 10 of the first embodiment is: described rotating shaft 220 1 ends are arranged on the driver 210, and the center that the other end passes described flourescent sheet 300 is fixedly connected with described substrate 110 centre of surfaces; Described some light emitting diodes 120 are arranged on substrate 110 on the surface of flourescent sheet 300.
In use, driver 210 drive shafts 220 are rotated, and drive substrate 110 relative fluorescence sheets 300 are done periodically speed change rotation, do periodically speed change rotation thereby drive light emitting diode 120 relative fluorescence sheets 300.Substrate 110 is in doing the process that periodically speed change is rotated, and interior light emitting diode 120 forward light of unit interval shine the fluorescent material quantity that excites and change, thereby realizes the adjusting to colour temperature.
Embodiment three
See also Fig. 4, the difference of the LED light source device 30 that third embodiment of the invention provides and the LED light source device 10 of the first embodiment is: described LED light source device 30 also comprises a PWM adjusting device 400, this PWM adjusting device 400 is used for the pulse width of each light emitting diode 120 of control, regulates lighting the time of each light emitting diode 120.
In use, periodically speed-changing rotation is done in driver 210 control rotating shafts 220, drive flourescent sheet 300 and do periodically speed change rotation, PWM adjusting device 400 each light emitting diode 120 of control lights the time simultaneously, by flourescent sheet 300 the lighting the time of each light emitting diode 120 that be rotatably assorted, controlling the illuminated time that excites of fluorescent material in each zone, thereby change colour temperature.
Be appreciated that ground, when driver 210 control flourescent sheets 300 are done uniform rotation, by lighting the time of PWM adjusting device 400 each light emitting diode 120 of control, namely control the flicker frequency of each light emitting diode 120, can also realize controlling the illuminated time that excites of fluorescent material in each zone, thereby change colour temperature.
Compared to prior art, LED light source device of the present invention utilizes drive division to drive that flourescent sheet is relative with substrate to be rotated, utilize the PWM adjusting device to regulate and change lighting the time of light emitting diode, thereby the illuminated time that excites of fluorescent material in the control flourescent sheet in each zone, thereby change colour temperature.
Be understandable that, for the person of ordinary skill of the art, can make change and the distortion that other various pictures are answered by technical conceive according to the present invention, and all these change the protection domain that all should belong to claim of the present invention with distortion.
Claims (9)
1. LED light source device, it comprises illuminating part and flourescent sheet, this illuminating part comprises substrate and is arranged on some light emitting diodes on this substrate, this flourescent sheet blocks on the bright dipping light path of this light emitting diode, it is characterized in that: comprise the different a plurality of zones of fluorescent material content in the described flourescent sheet, described LED light source device also comprises a drive division and a PWM adjusting device, this drive division drives that flourescent sheet is relative with substrate to be rotated, this PWM adjusting device is regulated and is changed lighting the time of each light emitting diode, controlling the illuminated time that excites of fluorescent material in each zone, thereby change colour temperature.
2. LED light source device as claimed in claim 1, it is characterized in that: described drive division comprises a driver and a rotating shaft, and an end of this rotating shaft is arranged on the driver, and this driver drives rotating shaft is around its central shaft rotation.
3. LED light source device as claimed in claim 2, it is characterized in that: described flourescent sheet center is sheathed to be fixed in the described rotating shaft, and described rotating shaft drives the relative substrate rotation of described flourescent sheet.
4. LED light source device as claimed in claim 2, it is characterized in that: the described rotating shaft other end passes described flourescent sheet and is fixedly connected with described substrate, drives the relatively described flourescent sheet rotation of described substrate.
5. LED light source device as claimed in claim 1, it is characterized in that: comprise a phosphor powder layer in the described flourescent sheet, the thickness of described phosphor powder layer is for to successively decrease gradually from the relative opposite side of a side direction of flourescent sheet.
6. LED light source device as claimed in claim 5 is characterized in that: the thickness of described phosphor powder layer periodically distributes along with the direction of rotation of flourescent sheet is one.
7. LED light source device as claimed in claim 1, it is characterized in that: described flourescent sheet contains the light diffusion particle, for increasing light emission rate.
8. LED light source device as claimed in claim 1, it is characterized in that: bright dipping one side of described flourescent sheet is provided with some lenticules, is used for scattering or focused ray.
9. LED light source device, it comprises illuminating part and flourescent sheet, this illuminating part comprises substrate and is arranged on some light emitting diodes on this substrate, this flourescent sheet blocks on the bright dipping light path of this light emitting diode, it is characterized in that: comprise a plurality of zones in the described flourescent sheet, fluorescent material content in each zone is different, described LED light source device also comprises a drive division, this drive division drives the relative periodically speed-changing rotation of doing with substrate of flourescent sheet, so that flourescent sheet and substrate are in the process of rotating relative to speed change, interior light emitting diode of unit interval shines the fluorescent material quantity that excites and changes, thereby changes colour temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101743101A CN102853277A (en) | 2011-06-27 | 2011-06-27 | LED (Light-emitting diode) light source device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101743101A CN102853277A (en) | 2011-06-27 | 2011-06-27 | LED (Light-emitting diode) light source device |
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| Publication Number | Publication Date |
|---|---|
| CN102853277A true CN102853277A (en) | 2013-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101743101A Pending CN102853277A (en) | 2011-06-27 | 2011-06-27 | LED (Light-emitting diode) light source device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102853277A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900964A (en) * | 2011-07-27 | 2013-01-30 | 鸿富锦精密工业（深圳）有限公司 | Light emitting diode light source device |
| CN107859888A (en) * | 2017-11-16 | 2018-03-30 | 广东晶科电子股份有限公司 | A kind of adjustable color temperature and the aobvious light source referred to |
| CN115273681A (en) * | 2022-07-05 | 2022-11-01 | 深圳市森鹏兴科技有限公司 | SMD virtual display screen RGB lamp pearl structure of LED |
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| JP2004341105A (en) * | 2003-05-14 | 2004-12-02 | Nec Viewtechnology Ltd | Projection type display device |
| CN101520134A (en) * | 2008-02-25 | 2009-09-02 | 晶元光电股份有限公司 | Light emitting device |
| CN101713508A (en) * | 2009-11-10 | 2010-05-26 | 福建泉州世光照明科技有限公司 | Intelligently adjustable-color temperature LED lamp |
| CN101761862A (en) * | 2008-12-24 | 2010-06-30 | 富士迈半导体精密工业（上海）有限公司 | Illumination device |
| CN101782189A (en) * | 2009-01-16 | 2010-07-21 | 富士迈半导体精密工业（上海）有限公司 | Illuminator |
| CN101839463A (en) * | 2009-03-17 | 2010-09-22 | 卡西欧计算机株式会社 | Light-emitting device and light supply apparatus and the projector that uses this light supply apparatus |
| US20100328628A1 (en) * | 2009-06-30 | 2010-12-30 | Casio Computer Co., Ltd | Light source unit and projector |
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2011
- 2011-06-27 CN CN2011101743101A patent/CN102853277A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004341105A (en) * | 2003-05-14 | 2004-12-02 | Nec Viewtechnology Ltd | Projection type display device |
| CN101520134A (en) * | 2008-02-25 | 2009-09-02 | 晶元光电股份有限公司 | Light emitting device |
| CN101761862A (en) * | 2008-12-24 | 2010-06-30 | 富士迈半导体精密工业（上海）有限公司 | Illumination device |
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| US20100328628A1 (en) * | 2009-06-30 | 2010-12-30 | Casio Computer Co., Ltd | Light source unit and projector |
| CN101713508A (en) * | 2009-11-10 | 2010-05-26 | 福建泉州世光照明科技有限公司 | Intelligently adjustable-color temperature LED lamp |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900964A (en) * | 2011-07-27 | 2013-01-30 | 鸿富锦精密工业（深圳）有限公司 | Light emitting diode light source device |
| CN107859888A (en) * | 2017-11-16 | 2018-03-30 | 广东晶科电子股份有限公司 | A kind of adjustable color temperature and the aobvious light source referred to |
| CN107859888B (en) * | 2017-11-16 | 2024-03-26 | 广东晶科电子股份有限公司 | Light source capable of adjusting color temperature and displaying finger |
| CN115273681A (en) * | 2022-07-05 | 2022-11-01 | 深圳市森鹏兴科技有限公司 | SMD virtual display screen RGB lamp pearl structure of LED |
| CN115273681B (en) * | 2022-07-05 | 2023-12-12 | 深圳市森鹏兴科技有限公司 | RGB lamp bead structure of patch type LED virtual display screen |
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Application publication date: 20130102 |